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GM1 MMEL.145 Justification of MMEL items

ED Decision 2014/004/R

JUSTIFICATIONS CONTENT

(a)     The justifications include information necessary to show compliance with applicable CS-MMEL paragraphs.

(b)     The justifications for an MMEL item include the list of functions associated to the item, as well as the associated functional failure(s), failure effect(s) and as far as practical the failure cause(s).

(c)      Where a message-oriented MMEL approach is in use, all failures combination/condition for which this message would be displayed should be considered when preparing the justifications.

(d)     When non-safety related items are proposed, the associated justifications may be limited to only demonstrating the non-safety related nature of the item in order to show compliance with CS MMEL.145.